Clean Your Home
First off, rid clutter from every area of the home -- closets, attic storage, kitchen cabinets, drawers, bath vanities, and shelves -- everywhere. Remember, this is no time to be sentimental: if you don't use it, lose it. Potential buyers are seriously put off by clutter, and most of us drag a lot more things through life than we really need.
Also, don't forget the furniture and fixtures when getting rid of clutter -- most of us put too much in too little space, which makes a buying prospect think your home is too small.
Then, have a great moving sale with all the stuff you've collected and use the proceeds for paint or whatever other materials you need for repair projects. If you just can't bear to part with some possessions, store them in the attic or some other place that's out of sight to a potential buyer.
After you've cleared out the clutter, it's time to really clean. Have the carpets professionally cleaned, strip and polish the floors, scour the bathrooms, go over the laundry room, polish the furniture, scour out the cabinets, wash the windows and window coverings, and clean up the ceiling fans and kitchen appliances. Basically, clean everything.
Don't forget the exterior: paint or power-wash everything that needs the work. Remember, this is a ceiling-to-floor, roof-to-foundation clean-up project.